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Colloquially micro crustaceans that appear on the surface of the body of the fish are called sea lice and are an epidemic problem for some species in captivity and indetermined the degree of impact that can have on wild fish. In Cabo San Lucas, B. C. S., several species of large pelagic fishes are target of sport fishing fleet, striped marlin (Kajikia audax), blue marlin (Makaira nigricans), black marlin (Makaira indica), sailfish (Istiophorus platypterus) mahi mahi (Coryphaena hippurus), yellowfin tuna (Thunnus albacares) and mako shark (Isurus oxyrinchus). The increased copepod parasitism was visible on striped marlin and mako shark from 2010 , 2011 and 2013, a series of samplings and analyzes to identify the species of parasites were carried out. The specimens used in this study were captured by sportfishing fleet in October 2010, and January 2011,2013 in Golden Gate (23 ° 02 'lat. N 110 ° 15'long. W) and Pozo de Cota (23 ° 02' lat. N 110 ° 09'long. W) Sea surface temperature recorded in October was 29.4 ° C and 27.8 ° C in January. The first results indicated that mako shark is parasitized by the copepod Dinemoura producta (MÜLLER, 1785) and striped marlin by Penella filosa (L. 1758). Information on the number of copepod species ecto and endoparasites in wild fish is poorly documented and in game fish is just beginning, so it is important to know the levels and frequency of infection of fish in the open ocean that may weaken and die before being captured.

Palabras clave: Striped marlin; Los Cabos; Parasitic copepods; sea lice

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